I have a picture of a graph so I can see that
8 = 35
12 = 45
18 = 65

But I want to be able to input anything from 5 to 30 and get the figure to
appear in another cell.







" wrote:

Andy
How does one know that 12 should be 45?
Ken


On Jun 7, 5:02 pm, AndyB wrote:
I have a graph which draws a line Rotations vs Time.
I want to make a cell where I can enter any amount of rotations and then
return the time in to another cell. Problem is it's not an easy relationship
between rotation and time.
Data:
Revs Time
5 20
10 40
15 55
20 70
25 85

If somone inputs 12 revs, the result should be 45